<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .demo{
            width: 100px;
            height: 100px;
            background-color: red;
        }
        .demo2{
           height: 2000px;
        }
    </style>
</head>
<body>
<div class="demo"></div>
<div class="demo2"></div>
<img class="lazy" data-src="images/2.jpg"  alt="" width="200px">
<script src="../jquery-1.12.4.js"></script>
<script src="../jQuery.color.js"></script>
<script src="../lazyload.js"></script>
<script>
    $(function () {
        $(".demo").animate({"backgroundColor":"skyblue"},1500);
        $("img.lazy").lazyload();
    })
</script>
</body>
</html>